Can-capping machine



Oct. 30, 1928. 1,689,815

c. A. BUNKER CAN CAPPING MACHINE Filed Feb. 2, 1925 INVENTOR A TTORNEY Patented Oct. 30, 192 8 om TED Tara's OFFIICZE. 1

CHARLES A. BUNKER, OF'KANSAS CITY, "MISSOUBI, ASSIGNOR T0 1?. COMS'IOCK, OF

KANSAS-'CITYQMISSOURI.

GAN-CA-PBING"MAGHINE.

ippllcation' filed February 2, "1-925, -Seria1N0.6,2 14.

This invention: relates to can capping machines P and: it is especially designed to apply capsztoi thenecks or delivery spouts of cans.

The 'invention'contemplates a 'Jeapping de vicecapable'of moving a cam lever carried by the cap into. locking p'osition,:the application of. the cap: and the locking ofith'e lever being done byiazsingle operation ofth'e capping'device andthe invention consistss'ince-rtain novel parts and combinations ofzpa-rts; all of: which will be'spec-ifically described hereinaften ret erenceabeing. had: to the accompanying tdrawings,zin =Whl0l1 I I Fig. i 1 s. acperspectiverview ofva can: capping :device constructed in accordance with my invention. 1 Y

.ElgIQfl'S-QII elevational -.view o'fthe' can cappingzd'evicewith the'iront.plate removed.-

.Fig 3 "1 is a vertical cross sectional view through the device. a i g Fig. 24 is: .a detailed;perspective' view of one of the caps tozbe applied, showing the'lever in unlockedposition. Y

Fig; 5 is alike view showing the cap applied to ithetneck ofthe can withitheleverin locked position; and

Fig. 6 is .a fragmentary view of *a can -to whichithe cap isftobe-a'pplied.

.Thercanf .1 may: be of'the usual construction with a neck: or delivery port: 2; The'neck :is provided with .a circumferential rib: or flange 3. and an annularigroove :4, i the 1 latter for enga gement by'ithe depending vflange 5 i of the mp6. The depending flange is slitted and it isprovided with a bead-7 to engage the groove 4 asis well understood. 'The'capis also provided with a locking lever 8. All of the struc- V tureiithus' far describediis. old in the priorart so no claim isimadefor' either the can or the cap; the invention residing only in 1 1 1 1 f pplyingthe capito the can.

The mechanism'for applying the cap con- 1 sists of aibaclcplate 10 and1 a front plate 11secureditogether by boltsj12 and 13. Theplates 10 and '11: areinspa-ced relation and between them is located a verticalslide comprising the .plate14 havinga slot 15 nearits upper end .and a' slot 16 near itslower end. 'Theslotsre- 'ceive guide rollers .17 and .18 between the plates so that the slide must move in a'reetilineardirection. 'Between the plates'IO and 11 are-pivoted actuating levers1'9 and 20 movable about the pivots '21 and. 22 and= they are connected-to'the upper end of the slide 14 by 11 by riveting 'it at '46 and47. The

links 23 and 24, pivoted to the slide at 25. The slide has notches 26 and 27 near its lower end which receive the-rollers 28 and 29 onthe endsv of theelbow levers 30 and 31, the elbow leversfbeing pivoted between the plates at 32 and 33. The outer endsof the elbow levers are connected. to cappin'gjaw arms 34 and 35 which are provided with elongated arcuate 'slots36 and 37 near theirlower ends and ride on'therollers 38 and 39-between the'plates 10 and 11. I i 7 'Thelower ends-of the arms 34 and 35 carry jaws 40 and 41 which are adapted to engage under the flange 3 when-thetool isapplied as will be described hereinafter. The two plates 10' and 11- are connected at their lower ends by a crossbar42 which .carriesaninverted U- shaped positioning member 43 having dependin'gfingers spaced apart, a distance substantially equal to the diameter of'the cap6 so thatthe cap can be received and positioned between thetarms when the tool is applying it to the-neck 2 of the can 1.

The cross bar42 has an end 44 which projects laterally a suflicient distance so that it will overlap'thetop of the cap 6 .(see Fig. 3). The purpose of the projecting portion 44 is to prevent'the ,toolfrom being applied so thatthe lever 8 will come on the back side d'f-the tool. If it did, jthe'lever would hit against the projection 44 and the operator would know that the tool was not. properly positioned. With this tool, it is necessary that the cam lever 8 come on the front" side of thetool, because the front side of the tool carries a mechanism applying lever which must. register with the cam lev'er'S in order to swing it into locking position when the cap is applied.

The lever positioning mechanism is shown as comprising a plate "45 at'rightangles to the plate 11 andit is fastened toth'e plate late 45- is an outstanding vertica llydispose flat plate'with camslots 48 an'd'49'and on the respective-sides'or" the plate 45-are two looking leverapplying arms 5O and51.

The levers 50 and 51 have bearing fingers "52 and 53which engage ina slot-'64 in the I The-spacer 59 is located between the two cam levers19 .fand;20 are spread apart so that in the'member 43, it will be obvious that the.

endsGO and 61 of the arms 50 and51. It

is these cams 60and 6 1 wliichthrow the lock-' they pull down on the slide 14. The down ward-movement-of the slide 14rrocks the.

clbow levers and 31 so that there would be a tendency to raise the arms 34 and 85,. but since the jaws and 41. are under the head 3, dueto the tact that the elbow levers.

30 and ll-swijng the upper ends outward, the plates must move downward and 811106 the plates carry the bar 42 with the cap received capwill be forced down over the neck 2 of the can.

At the same time th at thecap forced into position the slide'l t is moving downwardly at a speed in excess of the downward speed of the two plateslO and 11. Consequently it carries the two lovers and 51 downwardlyand since their'rollers 57 and 58 ride in the cam slots 48 and 419 the two levers 50 and 51 will have a down movement and'a rocking movement," that is they will rock on their projections 52 and 53 causing the ends and 61 to move outwardly and downwardly and then inwardly and downwardlv so that the lever 8 will be swung into. lock ing position as shown in Fig. 5. The cap is now applied. The levers 19 and 20 may then lie-swung up to thepositio'n shown in Figs. 2 and'l3 to release the cap. A new cap may now befinserted and the cycleot'operations just described, will be repeated on a new cannmgoperation. r

From the foregoing it will be seen that the capcan be quickly and efficiently applied tothe can and that the tool may be expeditiously released to receive another cap, and that. the can capping operation will be greatly facilitated by theuse of my invention. r

v I What I claim and desire to secure by Letters-Patent is p 1. A can capping device comprising a pair of pivoted, jaw arms, saidarms'havingarcuate slots therein, jaws carried by'the arms, sup

porting means for the arms, engaging said slots, a slide, means connecting the arms to the slide to actuate them into and out of can neck engaging position and a cap receivingmeans carried by the support.

2. A can capping device comprising a pair of pivoted jaw arms having longitudinally extending elongated slots therein, jaws carried by the arms, supporting means for the arms, engaging said slots, a slide, means con necting the arms to the slide to actuate them into and-outof can neck engaging position and a cap receiving. means carried by the support. I V V p I, 3. A vcan'capping' device 'compris'ingfsupporting means, levers carried by the supporting means, a longitudinally movable slide carried by the supporting means, links connectingthe levers to the slide, pivoted arms carried by the supporting means, actuating members pivoted to the supporting means and operatively engaging the arms andthe slide, jaw members carried by the arms and cap receiving means carried by the supporting means.

. 4. A can capping devicecomprisingsupporting means, levers carried by the support-1 ing means, a longitudinally movable slide carried by the supporting means, links connectinglthe levers to the slide, pivoted arms carried by :thesupporting means, actuating members pivoted to the supporting means and operatively engaging the armsand theslide,

jaw members carried by the arms and capireceiving lmeans' carried f by the supporting means, a guide plate carried by-the supporting means and a cap-locking leverf'actuating means carried bythe'slide and co-operating Y with the guideplate whereby the locking lever actuating meansiwill be moved soithat its lower end has first an outwardly: and downwardly and thenan inwardly directed movement when the slide is operated.

5. A cam capping machine comprising two parallel plates constituting supporting means,

a longitudinally movable slide. between the plates, operating means, links connecting theoperating means totheshde, aw members pivoted between the plates,;links .operatively connecting the jawmembers to the slide, a cap receiving means carried by the plates, .a plate on one of the first named plates extend ing at right angles thereto and having .cam slots and a lever loosely mounted in the slide and having means engagingthe cam shaped direction the lever will have motion imparted to it in an outward and downward direction.

6. A can capping machine comprising .two parallel plates, a longitudinally movable slide between the plates, means for imparting movement to the slide, pivoted jaw members carried by the plates, means for ioperatively connecting the jaw members to the slide, a can cap receiving means carried bythe plates, a can cap locking lever actuating means connected to the slide and a guide plate carried by one of the first named plates for controlling the movement 'of-the last named means.

7. A can cap applying device comprisinga frame, a longitudinally movable member slidf ably mountedin said frame, meansjmovable toward each other to engage with the neck of the can, a can cap receiving means, meansconnecting the neck engaglng means w th A the .110 slotsso that when the slide is moved in one slidable member and a can cap locking lever "cap to beappliecl to'the neck of a can, and actuator operatively connected with the slidmeans including a cam carried by the frame 10 able member. Y for moving a can cap lever into locking posi I 8. A can cap fastening device comprising tion, said lever-moving means including a a frame, a longitudinally movable plate ear,- member connected with the plate and actuated ried by the frame means carried by the frame by the cam. a and movable towards each other to engage In testimony whereof I aflix my signature. with the neck of a can, means for holding a CHARLES A. BUNKER. 

